In prep for using 1.17 features. Note the go.mod changes are due to: https://golang.org/doc/go1.17#go-command Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Fixes #1370 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
See https://github.com/tailscale/depaware Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>