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-rw-r--r--pkg/tcpip/header/icmpv4.go1
1 files changed, 1 insertions, 0 deletions
diff --git a/pkg/tcpip/header/icmpv4.go b/pkg/tcpip/header/icmpv4.go
index 7908c5744..1a631b31a 100644
--- a/pkg/tcpip/header/icmpv4.go
+++ b/pkg/tcpip/header/icmpv4.go
@@ -72,6 +72,7 @@ const (
// Values for ICMP code as defined in RFC 792.
const (
ICMPv4TTLExceeded = 0
+ ICMPv4HostUnreachable = 1
ICMPv4PortUnreachable = 3
ICMPv4FragmentationNeeded = 4
)