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Sporadic drops of gtpv2 gtp-u packets on FireWall-1 GX Technical Level
Symptoms
  • Incoming gtpv2 gtp-u packets are dropped by Security gateway after passing the interface and before gateway receives the policy.

  • The fw moniotor shows:
    Pv6 Prefix Length: 0
    PDN Address and Prefix(IPv6): 0000000000000000000000000
    PDN Address and Prefix(IPv4): 0.0.0.0 (0.0.0.0)
Cause

The IPv6 Prefix length is 0... and this is not accepted by the Security Gateway. But the issue is that if gateway is not enabled for the IPv6 traffic, the IPv6 Prefix length 0 (zero) is not an error.


Solution
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