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TUN-6741: ICMP proxy tries to listen on specific IPv4 & IPv6 when possible

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If it cannot determine the correct interface IP, it will fallback to all interfaces.
This commit also introduces the icmpv4-src and icmpv6-src flags
This commit is contained in:
cthuang
2022-09-20 11:39:51 +01:00
parent 3449ea35f2
commit be0305ec58
22 changed files with 262 additions and 109 deletions
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12
cmd/cloudflared/tunnel/subcommands.go
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@@ -176,6 +176,16 @@ var (
Usage: "Base64 encoded secret to set for the tunnel. The decoded secret must be at least 32 bytes long. If not specified, a random 32-byte secret will be generated.",
EnvVars: []string{"TUNNEL_CREATE_SECRET"},
}
icmpv4SrcFlag = &cli.StringFlag{
Name: "icmpv4-src",
Usage: "Source address to send/receive ICMPv4 messages. If not provided cloudflared will dial a local address to determine the source IP or fallback to 0.0.0.0.",
EnvVars: []string{"TUNNEL_ICMPV4_SRC"},
}
icmpv6SrcFlag = &cli.StringFlag{
Name: "icmpv6-src",
Usage: "Source address and the interface name to send/receive ICMPv6 messages. If not provided cloudflared will dial a local address to determine the source IP or fallback to ::.",
EnvVars: []string{"TUNNEL_ICMPV6_SRC"},
}
)
func buildCreateCommand() *cli.Command {
@@ -613,6 +623,8 @@ func buildRunCommand() *cli.Command {
selectProtocolFlag,
featuresFlag,
tunnelTokenFlag,
icmpv4SrcFlag,
icmpv6SrcFlag,
}
flags = append(flags, configureProxyFlags(false)...)
return &cli.Command{