Routing over another host to access LL address running FRRouting

[GamePlayer-8]

Hello,

I have a problem where I couldn't connect to FRRouting running at [fe80::5400:5ff:fe60:e633]:179 at host 1 from host 3 running over WireGuard at [2001:db8:bb0:1::5%bgp0].

Host 2 is in between those 2 FRRouting instances and runs WireGuard server.

Host 2 can access [fe80::5400:5ff:fe60:e633%ens3]:179 but sees port 179 as filtered at [2001:db8:bb0:1::5%bgp0].
Host 2 has assigned LL IP at ens3 fe80::5400:5ff:fe60:e633 and global link 2001:db8:bb0:1::1 at bgp0.
Host 2 has assigned LL IP for WireGuard fe80::1a2b:3c4d:2e6e:4390 and for host 3 - fe80::1a2b:3c4d:2e6e:4895. Both host 2 and 3 couldn't reach each other over LL IPs (Host 2 reports error From fe80::1a2b:3c4d:2e6e:4390%bgp0 icmp_seq=1 Destination unreachable: Address unreachable and Host 3 returns nothing from ping).

WireGuard uses IP range 2001:db8:bb0:1::/64 with Table = off and MTU = 1500.
On the WireGuard server side I run in PostUp: ip6tables -A FORWARD -i bgp0 -j ACCEPT; ip6tables -t nat -I POSTROUTING -o ens3 -j MASQUERADE; ip -6 addr add fe80::1a2b:3c4d:2e6e:4390/64 dev bgp0 scope link
Both hosts 2 and 3 can reach other through ping and standard communication on 2001:db8:bb0:1::/64 IP range.

FRRouting at host 3, to which I have access to stays in Active or Connect mode.

How to configure host 2 to forward port from [fe80::5400:5ff:fe60:e633%ens3]:179 to host 3 and port [2001:db8:bb0:1::5%bgp0]:179 to host 1 as well as make communication possible? Should I run another FRRouting instance on host 2 with the same ASN and network range or there's a way to use ip6tables NAT / socat for such setup?