Pypacker

Pypacker is a fast and simple packet creation and parsing library for Python. It lets you create packets manually by defining every aspect of all header data and dissect packets by parsing captured packet bytes. Currently minimum supported protocols are: Ethernet, IP, ICMP, TCP, UDP, HTTP, ARP, STP, OSPF, PPP, PPPoE, STP, VRRP, AH, ESP, IGMP, IPX, PIM, AIM, NTP, DHCP, RIP, SCTP, RTP, SIP, TFTP.