cwinfo/yggdrasil-go
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Don't send ICMPv6 back when tun disabled

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This commit is contained in:
Neil Alexander 2018-12-14 18:08:40 +00:00
parent 9eaa2566c1
commit 2a38ad07cd
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1 changed files with 0 additions and 19 deletions
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src/yggdrasil/router.go
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@ -270,25 +270,6 @@ func (r *router) sendPacket(bs []byte) {
// Drop packets if the session MTU is 0 - this means that one or other // Drop packets if the session MTU is 0 - this means that one or other
// side probably has their TUN adapter disabled // side probably has their TUN adapter disabled
if sinfo.getMTU() == 0 { if sinfo.getMTU() == 0 {
// Get the size of the oversized payload, up to a max of 900 bytes
window := 900
if len(bs) < window {
window = len(bs)
}
// Create the Destination Unreachable response
ptb := &icmp.DstUnreach{
Data: bs[:window],
}
// Create the ICMPv6 response from it
icmpv6Buf, err := r.tun.icmpv6.create_icmpv6_tun(
bs[8:24], bs[24:40],
ipv6.ICMPTypeDestinationUnreachable, 1, ptb)
if err == nil {
r.recv <- icmpv6Buf
}
// Don't continue - drop the packet // Don't continue - drop the packet
return return
} }