[Bug 233683] IPv6 ND neighbor solicitation messages fail to arrive

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 26 Feb 2022 19:19:49 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233683

--- Comment #4 from Paul Webster <paul.g.webster@googlemail.com> ---
Just to further add to the previous post, IPv4 and all other bridging is
operational, I have kept back information I felt irrellevent:

root@sitehost:/var # ping -c 3 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=118 time=5.425 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=118 time=5.222 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=118 time=5.242 ms


the rc.conf for the host is as such:

# Base services config
zfs_enable="YES"
sshd_enable="YES"
sendmail_enable="NONE"
syslogd_flags="-ss"

ntpd_enable="YES"
ntpd_sync_on_start="YES"
ntpd_config="/etc/ntp.conf"

# Jails
jail_enable="YES"
jail_list="poudriere webserver"

# Network related
hostname="de1.paulwebster.org"
gateway_enable="YES"
ipv6_gateway_enable="YES"

## IPv4, hetzner classic config
ifconfig_em0="inet 5.9.137.144/32"
ifconfig_em0_ipv6="inet6 2a01:4f8:190:1183::1:1/64 auto_linklocal"
gateway_if="em0"
gateway_ip="5.9.137.129"
static_routes="gateway default"
route_gateway="-host $gateway_ip -interface $gateway_if"
route_default="default $gateway_ip"

## IPv6, Meena attributed
ipv6_cpe_wanif="em0"
ipv6_defaultrouter="fe80::1%em0"
ipv6_activate_all_interfaces="YES"

## Virtual interfaces
cloned_interfaces="bridge102 bridge103 bridge104"
ifconfig_bridge102="inet 192.168.102.1/24"
ifconfig_bridge102_ipv6="inet6 2a01:4f8:190:1183::102:1/64 auto_linklocal
accept_rtadv"
ifconfig_bridge103="inet 192.168.103.1/24"
ifconfig_bridge103_ipv6="inet6 2a01:4f8:190:1183::103:1/64 auto_linklocal
accept_rtadv"
ifconfig_bridge104="inet 192.168.104.1/24"
ifconfig_bridge104_ipv6="inet6 2a01:4f8:190:1183::104:1/64 auto_linklocal
accept_rtadv"


the rc.conf for the VM is as such:

hostname="sitehost"
ifconfig_vtnet0="DHCP"
local_unbound_enable="YES"
sshd_enable="YES"
ntpdate_enable="YES"
ntpd_enable="YES"
# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
dumpdev="AUTO"
sendmail_enable="NONE"
nginx_enable="YES"

## IPv6, Meena attributed
ipv6_cpe_wanif="vtnet0"
ipv6_defaultrouter="fe80::1%vtnet0"
ipv6_activate_all_interfaces="YES"


the ifconfig of the host is as such:

root@de1:~ # ifconfig
em0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
       
options=481249b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LRO,WOL_MAGIC,VLAN_HWFILTER,NOMAP>
        ether 90:1b:0e:ab:a5:85
        inet 5.9.137.144 netmask 0xffffffff broadcast 5.9.137.144
        inet6 2a01:4f8:190:1183::1:1 prefixlen 64
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
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
        inet 127.0.0.1 netmask 0xff000000
        groups: lo
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
bridge102: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 58:9c:fc:10:ff:e2
        inet 192.168.102.1 netmask 0xffffff00 broadcast 192.168.102.255
        inet6 fe80::5a9c:fcff:fe10:ffe2%bridge102 prefixlen 64 scopeid 0x3
        inet6 2a01:4f8:190:1183::102:1 prefixlen 64
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        groups: bridge
        nd6 options=63<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL,NO_RADR>
bridge103: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 58:9c:fc:10:ff:f5
        inet 192.168.103.1 netmask 0xffffff00 broadcast 192.168.103.255
        inet6 fe80::5a9c:fcff:fe10:fff5%bridge103 prefixlen 64 scopeid 0x4
        inet6 2a01:4f8:190:1183::103:1 prefixlen 64
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        member: tap1033 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 9 priority 128 path cost 2000000
        member: tap1032 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 8 priority 128 path cost 2000000
        member: tap1031 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 11 priority 128 path cost 2000000
        member: tap1030 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 10 priority 128 path cost 2000000
        groups: bridge
        nd6 options=63<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL,NO_RADR>
bridge104: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 58:9c:fc:00:05:61
        inet 192.168.104.1 netmask 0xffffff00 broadcast 192.168.104.255
        inet6 fe80::5a9c:fcff:fe00:561%bridge104 prefixlen 64 scopeid 0x5
        inet6 2a01:4f8:190:1183::104:1 prefixlen 64
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        groups: bridge
        nd6 options=63<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL,NO_RADR>

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