hbsd-update trying to libunbound/IPv6
Created by: opviel
#### DESCRIPTION
After a reboot (following multiple pkg upgrade and hbsd-update), Unbound tries and fails to resolve IPv6.
No IPv6 is configured.
#### SYMPTOMS
root@vm1:~ # hbsd-update
[1609769214] libunbound[79327:0] error: udp connect failed: No route to host for 2001:7fd::1 port 53
[...]
[1609769215] libunbound[79327:0] error: udp connect failed: No route to host for 2803:f800:50::6ca2:c09c port 53
#### CONFIGURATION
root@vm1:~ # uname -a
FreeBSD vm1 12.2-STABLE-HBSD FreeBSD 12.2-STABLE-HBSD #0 : Mon Dec 28 16:44:09 UTC 2020 root@updater-01.md.hardenedbsd.lan:/usr/obj/usr/src/amd64.amd64/sys/HARDENEDBSD amd64
root@vm1:~ # which unbound
/usr/local/sbin/unbound
root@vm1:~ # unbound --version
[...]
Version 1.13.0
root@vm1:~ # grep -i unbound /etc/rc.conf
unbound_enable="YES"
unbound_anchorflags="-4"
root@vm1:~ # grep -i ipv6 /etc/rc.conf
ipv6_network_interfaces="none" # Default is auto
ipv6_activate_all_interfaces="NO" # this is the default
root@vm1:~ # cat /etc/resolv.conf
nameserver 80.69.96.12
nameserver 81.210.129.4
root@vm1:~ # ifconfig | grep -B2 inet6
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2