Hello, I am trying to configure a replacement firewall, this time based on Debian 10, Buster, with shorewall and shorewall6, including an IPv6 in IPv4 tunnel provided by Hurricane Electric. HE provided the following:
modprobe ipv6 ip tunnel add he-ipv6 mode sit remote IPv4_address local IPv4_address ttl 255 ip link set he-ipv6 up ip addr add 2001:470:1f08:2ea::2/64 dev he-ipv6 ip route add ::/0 dev he-ipv6 ip -f inet6 addr together with Server IPv6 Address Client IPv6 Address Routed IPv6 Prefix which mainly works except that: add tunnel "sit0" failed: No buffer space available There are several often historical packages related to networking, and now systemd has added more possible complications which may or may not work. I added /etc/systemd/network/25-sit.netdev based on an example: [NetDev] Name=he-ipv6 Kind=sit MTUBytes=1480 [Tunnel] Local=[IPv4_address] Remote=[IPv4_address] which did not help with buffers so I am now trying to figure out whether devlink-sb is what I need to configure, and if so what I need to do. The man pages have references to PCI devices, but sit just uses port 41, while there is no suggestion about required buffer size. Is there any information about requirements? My /etc/network/interfaces file has full information about the several wired connections but no reference to the sit device. Thanks for any help. -- Chris Bell Website http://chrisbell.org.uk -- GLLUG mailing list [email protected] https://mailman.lug.org.uk/mailman/listinfo/gllug
