--- Begin Message ---
Hello,
to day I noticed unreachable nameserver [a-d].nic.hosting. via IPv4
approved by at least two locations by such script:
for transport in tcp notcp; do
for protocol in 4 6; do
for host in a b c d; do
printf "${host}.nic.hosting/${protocol}/${transport}:"
if dig -${protocol} @${host}.nic.hosting. hosting. soa +timeout=1 +retry=1
+short +${transport} 2>/dev/null | grep --silent hostmaster.centralnic.net; then
printf "ok\n";
else
printf "fail\n";
fi
done
done
done
from AS31334 and AS15451:
a.nic.hosting/4/tcp:fail
b.nic.hosting/4/tcp:fail
c.nic.hosting/4/tcp:fail
d.nic.hosting/4/tcp:fail
a.nic.hosting/6/tcp:ok
b.nic.hosting/6/tcp:ok
c.nic.hosting/6/tcp:ok
d.nic.hosting/6/tcp:ok
a.nic.hosting/4/notcp:fail
b.nic.hosting/4/notcp:fail
c.nic.hosting/4/notcp:fail
d.nic.hosting/4/notcp:fail
a.nic.hosting/6/notcp:ok
b.nic.hosting/6/notcp:ok
c.nic.hosting/6/notcp:ok
d.nic.hosting/6/notcp:ok
from other locations I got 16x ok
Sometimes I also saw some OK for IPv4, too bit resolver so not retry as often.
Any hints?
Andreas
--- End Message ---
_______________________________________________
dns-operations mailing list
dns-operations@lists.dns-oarc.net
https://lists.dns-oarc.net/mailman/listinfo/dns-operations
