1  19:10:12.233047 IP 10.100.12.170.58699 > 10.100.13.157.6635: MPLS (label 21, tc 0, [S], ttl 63) IP 10.3.0.10 > 10.1.0.10: ICMP echo request, id 42731, seq 16, length 64
    2  19:10:12.233101 IP 10.100.13.157.51348 > 10.100.12.170.6635: MPLS (label 46, tc 0, [S], ttl 63) IP 10.1.0.10 > 10.3.0.10: ICMP echo reply, id 42731, seq 16, length 64