Lost ipv6 connectivity from one interface

[kiokoman]

it was working before, didn't do any change but i've lost ipv6 connectivity from one interface
pfsense 2.4.4-p3 under qemu/kvm

WAN (wan)       -> em0        -> v4: 151.3.xxx.xxx/29
LAN (lan)       -> em1        -> v4: 192.168.1.254/24
                                 v6: 2001:xxx:26:214::1/64
SRV (opt1)      -> em2        -> v4: 172.16.0.254/24
                                 v6: 2001:xxx:b4e1:ffff::1/64
HENETV6 (opt2)  -> gif0       -> v6: 2001:xxx:25:214::2/128

em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=2098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 52:54:00:3d:64:cc
        hwaddr 52:54:00:3d:64:cc
        inet6 fe80::5054:ff:fe3d:64cc%em0 prefixlen 64 scopeid 0x1
        inet 151.3.xxx.xx0 netmask 0xfffffff8 broadcast 151.3.xxx.xx5
        inet 151.3.xxx.xx1 netmask 0xfffffff8 broadcast 151.3.xxx.xx5
        inet 151.3.xxx.xx2 netmask 0xfffffff8 broadcast 151.3.xxx.xx5
        inet 151.3.xxx.xx3 netmask 0xfffffff8 broadcast 151.3.xxx.xx5
        inet 151.3.xxx.xx4 netmask 0xfffffff8 broadcast 151.3.xxx.xx5
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
em1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=2098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 52:54:00:fc:89:4c
        hwaddr 52:54:00:fc:89:4c
        inet6 fe80::5054:ff:fefc:894c%em1 prefixlen 64 scopeid 0x2
        inet6 2001:xxx:26:214::1 prefixlen 64
        inet 192.168.1.254 netmask 0xffffff00 broadcast 192.168.1.255
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
em2: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=2098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 52:54:00:39:00:62
        hwaddr 52:54:00:39:00:62
        inet6 fe80::5054:ff:fe39:62%em2 prefixlen 64 scopeid 0x3
        inet6 2001:xxx:b4e1:ffff::1 prefixlen 64
        inet 172.16.0.254 netmask 0xffffff00 broadcast 172.16.0.255
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active

ipv6 from LAN is working - dhcpv6 working / static ipv6 assigned is working
ipv6 from SRV is not working - dhcpv6 not working / static ipv6 assigned not working
ipv6 from SRV work if i set interface auto

there is only one linux server connected to srv

/etc/network/interfaces

### Start IPV6 static configuration

iface eno1 inet6 static
address 2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe
netmask 64
gateway 2001:xxx:b4e1:ffff::1
dns-nameservers 2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe

ip -6 route

::1 dev lo proto kernel metric 256 pref medium
2001:xxx:b4e1:ffff::/64 dev eno1 proto kernel metric 256 pref medium
fe80::/64 dev eno1 proto kernel metric 256 pref medium
default via 2001:xxx:b4e1:ffff::1 dev eno1 metric 1024 onlink pref medium

ifconfig

eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.16.0.100  netmask 255.255.255.0  broadcast 172.16.0.255
        inet6 2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::868f:69ff:fede:7fb8  prefixlen 64  scopeid 0x20<link>
        ether 84:8f:69:de:7f:b8  txqueuelen 1000  (Ethernet)
        RX packets 21295  bytes 3493853 (3.4 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 10583  bytes 2503528 (2.5 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

test:

ping fe80::5054:ff:fe39:62 -I eno1
PING fe80::5054:ff:fe39:62(fe80::5054:ff:fe39:62) from fe80::868f:69ff:fede:7fb8%eno1 eno1: 56 data bytes
64 bytes from fe80::5054:ff:fe39:62%eno1: icmp_seq=1 ttl=64 time=0.473 ms
64 bytes from fe80::5054:ff:fe39:62%eno1: icmp_seq=2 ttl=64 time=0.465 ms
64 bytes from fe80::5054:ff:fe39:62%eno1: icmp_seq=3 ttl=64 time=0.548 ms

ping 2001:xxx:b4e1:ffff::1
PING 2001:xxx:b4e1:ffff::1(2001:xxx:b4e1:ffff::1) 56 data bytes
From 2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe icmp_seq=1 Destination unreachable: Address unreachable
From 2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe icmp_seq=2 Destination unreachable: Address unreachable
From 2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe icmp_seq=3 Destination unreachable: Address unreachable

ping www.google.com
PING www.google.com(mil04s27-in-x04.1e100.net (2a00:1450:4002:809::2004)) 56 data bytes
From server.trmultiservice.lab (2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe) icmp_seq=1 Destination unreachable: Address unreachable
From server.trmultiservice.lab (2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe) icmp_seq=2 Destination unreachable: Address unreachable
From server.trmultiservice.lab (2001:xxx:b4e1:ffff:ffff:ffff:ffff:fffe) icmp_seq=3 Destination unreachable: Address unreachable

it was working before but the other day there was a long outage and the server/pfsense shout down
ipv6 from tunnel broker hurricane
ipv4 is working
any help would be really appreciated

[kiokoman]

after losing 2 days of sleep
the problem was solved after disabling "Block private networks and loopback addresses" and/or "Block bogon networks" that i had on the WAN interface
it was mentioned here
https://redmine.pfsense.org/issues/9631
also a route come out of nowhere after cheking the routing table i had the ip from general settings / DNS inside the routing table