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tailcfg: bump tailcfg.CapabilityVersion for conn25

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We have some client builds on the unstable track where the conn25 code
doesn't run if the TAILSCALE_USE_WIP_CODE env var is not set. But the
split DNS routes for conn25 configured domains do get installed. This
means that users running those builds would get traffic for configured
domains black holed if the env var is not set.

This issue was fixed in 425a916ce.

Bump tailcfg.CapabilityVersion, and then a corresponding change to the
control server to not send conn25 config to lower versions will
avoid this issue for those users.

Updates tailscale/corp#45363

Signed-off-by: Fran Bull <fran@tailscale.com>
This commit is contained in:
Fran Bull
2026-07-23 14:30:22 -07:00
committed by franbull
parent 682005aaa6
commit 1d2baa12fe
1 changed files with 2 additions and 1 deletions
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tailcfg/tailcfg.go
+2 -1
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@@ -189,7 +189,8 @@ type CapabilityVersion int
// - 140: 2026-05-27: Client understands [NodeAttrDisableUDPGRO], [NodeAttrDisableUDPGSO], [NodeAttrDisableTUNUDPGRO], [NodeAttrDisableTUNTCPGRO] // - 140: 2026-05-27: Client understands [NodeAttrDisableUDPGRO], [NodeAttrDisableUDPGSO], [NodeAttrDisableTUNUDPGRO], [NodeAttrDisableTUNTCPGRO]
// - 141: 2026-05-28: Client understands [NodeAttrNeverGSOEqualTail] // - 141: 2026-05-28: Client understands [NodeAttrNeverGSOEqualTail]
// - 142: 2026-07-06: Client understands c2n /remoteapi/localapi/* proxy // - 142: 2026-07-06: Client understands c2n /remoteapi/localapi/* proxy
const CurrentCapabilityVersion CapabilityVersion = 142 // - 143: 2026-07-22: Client correctly ignores conn25 node attributes when not enabled by environment variable
const CurrentCapabilityVersion CapabilityVersion = 143
// ID is an integer ID for a user, node, or login allocated by the // ID is an integer ID for a user, node, or login allocated by the
// control plane. // control plane.