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all: declare & plumb IPv6 masquerade address for peer

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This PR plumbs through awareness of an IPv6 SNAT/masquerade address from the wire protocol
through to the low-level (tstun / wgengine). This PR is the first in two PRs for implementing
IPv6 NAT support to/from peers.

A subsequent PR will implement the data-plane changes to implement IPv6 NAT - this is just plumbing.

Signed-off-by: Tom DNetto <tom@tailscale.com>
Updates ENG-991
This commit is contained in:
Tom DNetto
2023-09-18 17:03:53 -07:00
committed by Tom
parent d9ae7d670e
commit c08cf2a9c6
13 changed files with 81 additions and 9 deletions
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8
control/controlclient/map.go
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@@ -703,6 +703,14 @@ func peerChangeDiff(was tailcfg.NodeView, n *tailcfg.Node) (_ *tailcfg.PeerChang
if va == nil || vb == nil || *va != *vb {
return nil, false
}
case "SelfNodeV6MasqAddrForThisPeer":
va, vb := was.SelfNodeV6MasqAddrForThisPeer(), n.SelfNodeV6MasqAddrForThisPeer
if va == nil && vb == nil {
continue
}
if va == nil || vb == nil || *va != *vb {
return nil, false
}
case "ExitNodeDNSResolvers":
va, vb := was.ExitNodeDNSResolvers(), views.SliceOfViews(n.ExitNodeDNSResolvers)