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Commita658ccf

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fix(vpn): send subnet masks and prefix lengths from router (#16317)
These were somehow missed when I wrote the router..Also updates `coder/tailscale` to bring in the DNS changescoder/tailscale#64
1 parentd32a5e1 commita658ccf

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5 files changed

+36
-29
lines changed

5 files changed

+36
-29
lines changed

‎go.mod‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -36,7 +36,7 @@ replace github.com/tcnksm/go-httpstat => github.com/coder/go-httpstat v0.0.0-202
3636

3737
// There are a few minor changes we make to Tailscale that we're slowly upstreaming. Compare here:
3838
// https://github.com/tailscale/tailscale/compare/main...coder:tailscale:main
39-
replacetailscale.com =>github.com/coder/tailscalev1.1.1-0.20250121163848-c7962497b482
39+
replacetailscale.com =>github.com/coder/tailscalev1.1.1-0.20250129014916-8086c871eae6
4040

4141
// This is replaced to include
4242
// 1. a fix for a data race: c.f. https://github.com/tailscale/wireguard-go/pull/25

‎go.sum‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -240,8 +240,8 @@ github.com/coder/serpent v0.10.0 h1:ofVk9FJXSek+SmL3yVE3GoArP83M+1tX+H7S4t8BSuM=
240240
github.com/coder/serpentv0.10.0/go.mod h1:cZFW6/fP+kE9nd/oRkEHJpG6sXCtQ+AX7WMMEHv0Y3Q=
241241
github.com/coder/sshv0.0.0-20231128192721-70855dedb788 h1:YoUSJ19E8AtuUFVYBpXuOD6a/zVP3rcxezNsoDseTUw=
242242
github.com/coder/sshv0.0.0-20231128192721-70855dedb788/go.mod h1:aGQbuCLyhRLMzZF067xc84Lh7JDs1FKwCmF1Crl9dxQ=
243-
github.com/coder/tailscalev1.1.1-0.20250121163848-c7962497b482 h1:hCyBW9rsYwBmyAP+jnsmUnYC0dVlyLdOuMvyFpGOiIk=
244-
github.com/coder/tailscalev1.1.1-0.20250121163848-c7962497b482/go.mod h1:1ggFFdHTRjPRu9Yc1yA7nVHBYB50w9Ce7VIXNqcW6Ko=
243+
github.com/coder/tailscalev1.1.1-0.20250129014916-8086c871eae6 h1:prDIwUcsSEKbs1Rc5FfdvtSfz2XGpW3FnJtWR+Mc7MY=
244+
github.com/coder/tailscalev1.1.1-0.20250129014916-8086c871eae6/go.mod h1:1ggFFdHTRjPRu9Yc1yA7nVHBYB50w9Ce7VIXNqcW6Ko=
245245
github.com/coder/terraform-config-inspectv0.0.0-20250107175719-6d06d90c630e h1:JNLPDi2P73laR1oAclY6jWzAbucf70ASAvf5mh2cME0=
246246
github.com/coder/terraform-config-inspectv0.0.0-20250107175719-6d06d90c630e/go.mod h1:Gz/z9Hbn+4KSp8A2FBtNszfLSdT2Tn/uAKGuVqqWmDI=
247247
github.com/coder/terraform-provider-coderv1.0.4 h1:MJldCvykIQzzqBVUDjCJpPyqvKelAAHrtJKfIIx4Qxo=

‎vpn/router.go‎

Lines changed: 25 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -36,12 +36,16 @@ func (*vpnRouter) Close() error {
3636

3737
funcconvertRouterConfig(cfg router.Config)*NetworkSettingsRequest {
3838
v4LocalAddrs:=make([]string,0)
39+
v4SubnetMasks:=make([]string,0)
3940
v6LocalAddrs:=make([]string,0)
41+
v6PrefixLengths:=make([]uint32,0)
4042
for_,addrs:=rangecfg.LocalAddrs {
4143
ifaddrs.Addr().Is4() {
42-
v4LocalAddrs=append(v4LocalAddrs,addrs.String())
44+
v4LocalAddrs=append(v4LocalAddrs,addrs.Addr().String())
45+
v4SubnetMasks=append(v4SubnetMasks,prefixToSubnetMask(addrs))
4346
}elseifaddrs.Addr().Is6() {
44-
v6LocalAddrs=append(v6LocalAddrs,addrs.String())
47+
v6LocalAddrs=append(v6LocalAddrs,addrs.Addr().String())
48+
v6PrefixLengths=append(v6PrefixLengths,uint32(addrs.Bits()))
4549
}else {
4650
continue
4751
}
@@ -69,18 +73,31 @@ func convertRouterConfig(cfg router.Config) *NetworkSettingsRequest {
6973
}
7074
}
7175

72-
return&NetworkSettingsRequest{
73-
Mtu:uint32(cfg.NewMTU),
74-
Ipv4Settings:&NetworkSettingsRequest_IPv4Settings{
76+
varv4Settings*NetworkSettingsRequest_IPv4Settings
77+
iflen(v4LocalAddrs)>0||len(v4Routes)>0||len(v4ExcludedRoutes)>0 {
78+
v4Settings=&NetworkSettingsRequest_IPv4Settings{
7579
Addrs:v4LocalAddrs,
80+
SubnetMasks:v4SubnetMasks,
7681
IncludedRoutes:v4Routes,
7782
ExcludedRoutes:v4ExcludedRoutes,
78-
},
79-
Ipv6Settings:&NetworkSettingsRequest_IPv6Settings{
83+
Router:"",// NA
84+
}
85+
}
86+
87+
varv6Settings*NetworkSettingsRequest_IPv6Settings
88+
iflen(v6LocalAddrs)>0||len(v6Routes)>0||len(v6ExcludedRoutes)>0 {
89+
v6Settings=&NetworkSettingsRequest_IPv6Settings{
8090
Addrs:v6LocalAddrs,
91+
PrefixLengths:v6PrefixLengths,
8192
IncludedRoutes:v6Routes,
8293
ExcludedRoutes:v6ExcludedRoutes,
83-
},
94+
}
95+
}
96+
97+
return&NetworkSettingsRequest{
98+
Mtu:uint32(cfg.NewMTU),
99+
Ipv4Settings:v4Settings,
100+
Ipv6Settings:v6Settings,
84101
TunnelOverheadBytes:0,// N/A
85102
TunnelRemoteAddress:"",// N/A
86103
}

‎vpn/router_internal_test.go‎

Lines changed: 6 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -27,7 +27,8 @@ func TestConvertRouterConfig(t *testing.T) {
2727
expected:&NetworkSettingsRequest{
2828
Mtu:1500,
2929
Ipv4Settings:&NetworkSettingsRequest_IPv4Settings{
30-
Addrs: []string{"100.64.0.1/32"},
30+
Addrs: []string{"100.64.0.1"},
31+
SubnetMasks: []string{"255.255.255.255"},
3132
IncludedRoutes: []*NetworkSettingsRequest_IPv4Settings_IPv4Route{
3233
{Destination:"192.168.0.0",Mask:"255.255.255.0",Router:""},
3334
},
@@ -36,7 +37,8 @@ func TestConvertRouterConfig(t *testing.T) {
3637
},
3738
},
3839
Ipv6Settings:&NetworkSettingsRequest_IPv6Settings{
39-
Addrs: []string{"fd7a:115c:a1e0::1/128"},
40+
Addrs: []string{"fd7a:115c:a1e0::1"},
41+
PrefixLengths: []uint32{128},
4042
IncludedRoutes: []*NetworkSettingsRequest_IPv6Settings_IPv6Route{
4143
{Destination:"fd00::",PrefixLength:64,Router:""},
4244
},
@@ -50,16 +52,8 @@ func TestConvertRouterConfig(t *testing.T) {
5052
name:"Empty",
5153
cfg: router.Config{},
5254
expected:&NetworkSettingsRequest{
53-
Ipv4Settings:&NetworkSettingsRequest_IPv4Settings{
54-
Addrs: []string{},
55-
IncludedRoutes: []*NetworkSettingsRequest_IPv4Settings_IPv4Route{},
56-
ExcludedRoutes: []*NetworkSettingsRequest_IPv4Settings_IPv4Route{},
57-
},
58-
Ipv6Settings:&NetworkSettingsRequest_IPv6Settings{
59-
Addrs: []string{},
60-
IncludedRoutes: []*NetworkSettingsRequest_IPv6Settings_IPv6Route{},
61-
ExcludedRoutes: []*NetworkSettingsRequest_IPv6Settings_IPv6Route{},
62-
},
55+
Ipv4Settings:nil,
56+
Ipv6Settings:nil,
6357
},
6458
},
6559
}

‎vpn/tunnel_internal_test.go‎

Lines changed: 2 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -317,12 +317,8 @@ func TestUpdater_createPeerUpdate(t *testing.T) {
317317
},
318318
})
319319
require.Len(t,update.UpsertedAgents,1)
320-
slices.SortFunc(update.UpsertedAgents[0].Fqdn,func(a,bstring)int {
321-
returnstrings.Compare(a,b)
322-
})
323-
slices.SortFunc(update.DeletedAgents[0].Fqdn,func(a,bstring)int {
324-
returnstrings.Compare(a,b)
325-
})
320+
slices.SortFunc(update.UpsertedAgents[0].Fqdn,strings.Compare)
321+
slices.SortFunc(update.DeletedAgents[0].Fqdn,strings.Compare)
326322
require.Equal(t,update,&PeerUpdate{
327323
UpsertedWorkspaces: []*Workspace{
328324
{Id:w1ID[:],Name:"w1",Status:Workspace_Status(proto.Workspace_STARTING)},

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