For test, I turn off WiFi and physically disconnect all devices accept server and my computer from switch. Same story with only two devices on LAN.
root@unbound:/usr/ports/dns/unbound # make clean install
===> Cleaning for unbound-1.6.2
===> Building/installing dialog4ports as it is required for the config dialog
===> Cleaning for dialog4ports-0.1.6
===> License BSD2CLAUSE accepted by the user
===> dialog4ports-0.1.6 depends on file: /usr/local/sbin/pkg - found
=> dialog4ports-0.1.6.tar.gz doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch http://m1cro.me/dialog4ports/dialog4ports-0.1.6.tar.gz
dialog4ports-0.1.6.tar.gz 100% of 10 kB 138 kBps 00m00s
===> Fetching all distfiles required by dialog4ports-0.1.6 for building
===> Extracting for dialog4ports-0.1.6
=> SHA256 Checksum OK for dialog4ports-0.1.6.tar.gz.
===> Patching for dialog4ports-0.1.6
===> Configuring for dialog4ports-0.1.6
===> Building for dialog4ports-0.1.6
--- dialog4ports.o ---
--- mixedlist.o ---
--- dialog4ports.1.gz ---
--- dialog4ports.o ---
cc -O2 -pipe -fstack-protector -fno-strict-aliasing -Wall -pedantic -c dialog4ports.c -o dialog4ports.o
--- dialog4ports.1.gz ---
gzip -cn dialog4ports.1 > dialog4ports.1.gz
--- mixedlist.o ---
cc -O2 -pipe -fstack-protector -fno-strict-aliasing -Wall -pedantic -c mixedlist.c -o mixedlist.o
--- dialog4ports ---
cc -O2 -pipe -fstack-protector -fno-strict-aliasing -Wall -pedantic dialog4ports.o mixedlist.o -o dialog4ports -lncursesw -lm -ldialog
===> Staging for dialog4ports-0.1.6
===> Generating temporary packing list
install -s -m 555 dialog4ports /usr/ports/ports-mgmt/dialog4ports/work/stage/usr/local/bin
install -m 0644 dialog4ports.1.gz /usr/ports/ports-mgmt/dialog4ports/work/stage/usr/local/man/man1
====> Compressing man pages (compress-man)
===> Installing for dialog4ports-0.1.6
===> Checking if dialog4ports already installed
===> Registering installation for dialog4ports-0.1.6
[unbound] Installing dialog4ports-0.1.6...
===> Cleaning for dialog4ports-0.1.6
ββββββββββββββββββββββββββββ unbound-1.6.2 βββββββββββββββββββββββββββββββ
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β+[ ] DNSCRYPT Enable dnscrypt support β β
β β+[ ] DNSTAP Enable dnstap logging support β β
β β+[x] DOCS Build and/or install documentation β β
β β+[x] ECDSA Enable ECDSA (elliptic curve) support (OpenSSL >=β β
β β+[ ] EVAPI (Experimental) pluggable event based libunbound Aβ β
β β+[ ] FILTER_AAAA Build with AAAA filter functionality (contrib) β β
β β+[ ] GOST Enable GOST support (requires OpenSSL >= 1.0) β β
β β+[ ] LIBEVENT Build against libevent β β
β β+[ ] MUNIN_PLUGIN Install Munin plugin β β
β β+[ ] PYTHON Python bindings or support β β
β β+[ ] SUBNET Enable client subnet support β β
β β+[ ] TFOCL Enable TCP Fast Open for client mode β β
β β+[ ] TFOSE Enable TCP Fast Open for server mode β β
β β+[x] THREADS Threading support β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β < OK > <Cancel> β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
===> License BSD3CLAUSE accepted by the user
===> unbound-1.6.2 depends on file: /usr/local/sbin/pkg - found
=> unbound-1.6.2.tar.gz doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch http://unbound.net/downloads/unbound-1.6.2.tar.gz
unbound-1.6.2.tar.gz 100% of 5252 kB 8734 kBps 00m01s
===> Fetching all distfiles required by unbound-1.6.2 for building
===> Extracting for unbound-1.6.2
=> SHA256 Checksum OK for unbound-1.6.2.tar.gz.
===> Patching for unbound-1.6.2
===> unbound-1.6.2 depends on executable: autoconf-2.69 - not found
===> autoconf-2.69_1 depends on file: /usr/local/sbin/pkg - found
=> autoconf-2.69.tar.xz doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch http://ftpmirror.gnu.org/autoconf/autoconf-2.69.tar.xz
autoconf-2.69.tar.xz 100% of 1186 kB 17 MBps 00m00s
===> Fetching all distfiles required by autoconf-2.69_1 for building
===> Extracting for autoconf-2.69_1
=> SHA256 Checksum OK for autoconf-2.69.tar.xz.
===> Patching for autoconf-2.69_1
===> Applying FreeBSD patches for autoconf-2.69_1
===> autoconf-2.69_1 depends on executable: gm4 - not found
βββββββββββββββββββββββββββββ m4-1.4.18,1 ββββββββββββββββββββββββββββββββ
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β+[x] EXAMPLES Build and/or install examples β β
β β+[ ] LIBSIGSEGV Use alternative page fault handler (GNU libsigsegv)β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β < OK > <Cancel> β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
===> License GPLv3 accepted by the user
===> m4-1.4.18,1 depends on file: /usr/local/sbin/pkg - found
=> m4-1.4.18.tar.xz doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch http://ftpmirror.gnu.org/m4/m4-1.4.18.tar.xz
m4-1.4.18.tar.xz 100% of 1179 kB 16 MBps 00m00s
===> Fetching all distfiles required by m4-1.4.18,1 for building
===> Extracting for m4-1.4.18,1
=> SHA256 Checksum OK for m4-1.4.18.tar.xz.
===> Patching for m4-1.4.18,1
===> Applying FreeBSD patches for m4-1.4.18,1
===> m4-1.4.18,1 depends on executable: makeinfo - not found
βββββββββββββββββββββββββββ texinfo-6.3_1,1 ββββββββββββββββββββββββββββββ
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β+[x] NLS Native Language Support β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β < OK > <Cancel> β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
===> License GPLv3+ accepted by the user
===> texinfo-6.3_1,1 depends on file: /usr/local/sbin/pkg - found
=> texinfo-6.3.tar.xz doesn't seem to exist in /usr/ports/distfiles/texinfo/6.3.
=> Attempting to fetch http://ftpmirror.gnu.org/texinfo/texinfo-6.3.tar.xz
texinfo-6.3.tar.xz 100% of 4363 kB 20 MBps 00m00s
=> htmlxref.cnf doesn't seem to exist in /usr/ports/distfiles/texinfo/6.3.
=> Attempting to fetch http://ftpmirror.gnu.org/texinfo/htmlxref.cnf
fetch: http://ftpmirror.gnu.org/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch http://ftp.gnu.org/gnu/texinfo/htmlxref.cnf
fetch: http://ftp.gnu.org/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch ftp://ftp.gnu.org/gnu/texinfo/htmlxref.cnf
fetch: ftp://ftp.gnu.org/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch http://www.gtlib.gatech.edu/pub/gnu/gnu/texinfo/htmlxref.cnf
fetch: http://www.gtlib.gatech.edu/pub/gnu/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch http://mirrors.kernel.org/gnu/texinfo/htmlxref.cnf
fetch: http://mirrors.kernel.org/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch ftp://ftp.kddlabs.co.jp/GNU/gnu/texinfo/htmlxref.cnf
fetch: ftp://ftp.kddlabs.co.jp/GNU/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch ftp://ftp.dti.ad.jp/pub/GNU/texinfo/htmlxref.cnf
fetch: ftp://ftp.dti.ad.jp/pub/GNU/texinfo/htmlxref.cnf: Protocol error
=> Attempting to fetch ftp://ftp.mirrorservice.org/sites/ftp.gnu.org/gnu/texinfo/htmlxref.cnf
fetch: ftp://ftp.mirrorservice.org/sites/ftp.gnu.org/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch ftp://ftp.informatik.hu-berlin.de/pub/gnu/gnu/texinfo/htmlxref.cnf
fetch: ftp://ftp.informatik.hu-berlin.de/pub/gnu/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch ftp://ftp.informatik.rwth-aachen.de/pub/mirror/ftp.gnu.org/pub/gnu/texinfo/htmlxref.cnf
fetch: ftp://ftp.informatik.rwth-aachen.de/pub/mirror/ftp.gnu.org/pub/gnu/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch http://ftp.funet.fi/pub/gnu/prep/texinfo/htmlxref.cnf
fetch: http://ftp.funet.fi/pub/gnu/prep/texinfo/htmlxref.cnf: size mismatch: expected 20137, actual 20118
=> Attempting to fetch http://distcache.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/htmlxref.cnf
htmlxref.cnf 100% of 19 kB 562 kBps 00m00s
=> texinfo.tex doesn't seem to exist in /usr/ports/distfiles/texinfo/6.3.
=> Attempting to fetch http://ftpmirror.gnu.org/texinfo/texinfo.tex
fetch: http://ftpmirror.gnu.org/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://ftp.gnu.org/gnu/texinfo/texinfo.tex
fetch: http://ftp.gnu.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.gnu.org/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.gnu.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://www.gtlib.gatech.edu/pub/gnu/gnu/texinfo/texinfo.tex
fetch: http://www.gtlib.gatech.edu/pub/gnu/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 381336
=> Attempting to fetch http://mirrors.kernel.org/gnu/texinfo/texinfo.tex
fetch: http://mirrors.kernel.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.kddlabs.co.jp/GNU/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.kddlabs.co.jp/GNU/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.dti.ad.jp/pub/GNU/texinfo/texinfo.tex
fetch: ftp://ftp.dti.ad.jp/pub/GNU/texinfo/texinfo.tex: Protocol error
=> Attempting to fetch ftp://ftp.mirrorservice.org/sites/ftp.gnu.org/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.mirrorservice.org/sites/ftp.gnu.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.informatik.hu-berlin.de/pub/gnu/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.informatik.hu-berlin.de/pub/gnu/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.informatik.rwth-aachen.de/pub/mirror/ftp.gnu.org/pub/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.informatik.rwth-aachen.de/pub/mirror/ftp.gnu.org/pub/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://ftp.funet.fi/pub/gnu/prep/texinfo/texinfo.tex
fetch: http://ftp.funet.fi/pub/gnu/prep/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://distcache.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.us-east.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.us-east.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.eu.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.eu.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.us-west.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.us-west.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.FreeBSD.org/ports-distfiles/texinfo/6.3/texinfo.tex
fetch: http://distcache.FreeBSD.org/ports-distfiles/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Couldn't fetch it - please try to retrieve this
=> port manually into /usr/ports/distfiles/texinfo/6.3 and try again.
*** Error code 1
Stop.
make[6]: stopped in /usr/ports/print/texinfo
*** Error code 1
Stop.
make[5]: stopped in /usr/ports/print/texinfo
*** Error code 1
Stop.
make[4]: stopped in /usr/ports/devel/m4
*** Error code 1
Stop.
make[3]: stopped in /usr/ports/devel/m4
*** Error code 1
Stop.
make[2]: stopped in /usr/ports/devel/autoconf
*** Error code 1
Stop.
make[1]: stopped in /usr/ports/dns/unbound
*** Error code 1
Stop.
make: stopped in /usr/ports/dns/unbound
root@unbound:/usr/ports/dns/unbound #
I successfully download one part, problem occur after few minutes.
size mismatch: expected 380556, actual 382193??
It actually downloaded more than it should??
=> Attempting to fetch http://ftpmirror.gnu.org/texinfo/texinfo.tex
fetch: http://ftpmirror.gnu.org/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://ftp.gnu.org/gnu/texinfo/texinfo.tex
fetch: http://ftp.gnu.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.gnu.org/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.gnu.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://www.gtlib.gatech.edu/pub/gnu/gnu/texinfo/texinfo.tex
fetch: http://www.gtlib.gatech.edu/pub/gnu/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 381336
=> Attempting to fetch http://mirrors.kernel.org/gnu/texinfo/texinfo.tex
fetch: http://mirrors.kernel.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.kddlabs.co.jp/GNU/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.kddlabs.co.jp/GNU/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.dti.ad.jp/pub/GNU/texinfo/texinfo.tex
fetch: ftp://ftp.dti.ad.jp/pub/GNU/texinfo/texinfo.tex: Protocol error
=> Attempting to fetch ftp://ftp.mirrorservice.org/sites/ftp.gnu.org/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.mirrorservice.org/sites/ftp.gnu.org/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.informatik.hu-berlin.de/pub/gnu/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.informatik.hu-berlin.de/pub/gnu/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch ftp://ftp.informatik.rwth-aachen.de/pub/mirror/ftp.gnu.org/pub/gnu/texinfo/texinfo.tex
fetch: ftp://ftp.informatik.rwth-aachen.de/pub/mirror/ftp.gnu.org/pub/gnu/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://ftp.funet.fi/pub/gnu/prep/texinfo/texinfo.tex
fetch: http://ftp.funet.fi/pub/gnu/prep/texinfo/texinfo.tex: size mismatch: expected 380556, actual 382193
=> Attempting to fetch http://distcache.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.us-east.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.us-east.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.eu.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.eu.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.us-west.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex
fetch: http://distcache.us-west.FreeBSD.org/local-distfiles/sunpoet/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Attempting to fetch http://distcache.FreeBSD.org/ports-distfiles/texinfo/6.3/texinfo.tex
fetch: http://distcache.FreeBSD.org/ports-distfiles/texinfo/6.3/texinfo.tex: size mismatch: expected 380556, actual 380853
=> Couldn't fetch it - please try to retrieve this
=> port manually into /usr/ports/distfiles/texinfo/6.3 and try again.
*** Error code 1
Stop.
make[6]: stopped in /usr/ports/print/texinfo
*** Error code 1
Stop.
make[5]: stopped in /usr/ports/print/texinfo
*** Error code 1
Stop.
make[4]: stopped in /usr/ports/devel/m4
*** Error code 1
Stop.
make[3]: stopped in /usr/ports/devel/m4
*** Error code 1
Stop.
make[2]: stopped in /usr/ports/devel/autoconf
*** Error code 1
Stop.
make[1]: stopped in /usr/ports/dns/unbound
*** Error code 1
Stop.
make: stopped in /usr/ports/dns/unbound
root@unbound:/usr/ports/dns/unbound #