From cc9d16758be69c0ca16eb7f11b31a07945cf427e Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Sun, 14 May 2023 19:12:09 +0200 Subject: conf, pasta: With --config-net, copy all addresses by default Use the newly-introduced NL_DUP mode for nl_addr() to copy all the addresses associated to the template interface in the outer namespace, unless --no-copy-addrs (also implied by -a) is given. This option is introduced as deprecated right away: it's not expected to be of any use, but it's helpful to keep it around for a while to debug any suspected issue with this change. This is done mostly for consistency with routes. It might partially cover the issue at: https://bugs.passt.top/show_bug.cgi?id=47 Support multiple addresses per address family for some use cases, but not the originally intended one: we'll still use a single outbound address (unless the routing table specifies different preferred source addresses depending on the destination), regardless of the address used in the target namespace. Link: https://bugs.passt.top/show_bug.cgi?id=47 Signed-off-by: Stefano Brivio Reviewed-by: David Gibson --- pasta.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'pasta.c') diff --git a/pasta.c b/pasta.c index 798aeb6..13ab18b 100644 --- a/pasta.c +++ b/pasta.c @@ -274,11 +274,12 @@ void pasta_ns_conf(struct ctx *c) if (c->pasta_conf_ns) { enum nl_op op_routes = c->no_copy_routes ? NL_SET : NL_DUP; + enum nl_op op_addrs = c->no_copy_addrs ? NL_SET : NL_DUP; nl_link(1, c->pasta_ifi, c->mac_guest, 1, c->mtu); if (c->ifi4) { - nl_addr(NL_SET, c->ifi4, c->pasta_ifi, AF_INET, + nl_addr(op_addrs, c->ifi4, c->pasta_ifi, AF_INET, &c->ip4.addr, &c->ip4.prefix_len, NULL); nl_route(op_routes, c->ifi4, c->pasta_ifi, AF_INET, &c->ip4.gw); @@ -286,7 +287,7 @@ void pasta_ns_conf(struct ctx *c) if (c->ifi6) { int prefix_len = 64; - nl_addr(NL_SET, c->ifi6, c->pasta_ifi, AF_INET6, + nl_addr(op_addrs, c->ifi6, c->pasta_ifi, AF_INET6, &c->ip6.addr, &prefix_len, NULL); nl_route(op_routes, c->ifi6, c->pasta_ifi, AF_INET6, &c->ip6.gw); -- cgit v1.2.3