The first byte in this string identifies the type of packet that
opened the link the last time.
IP 1 Internet Protocols 0xcc
IPX 2 Novell IPX 0x800000008137
STA_ETH 3 Bridge-Ether 0x800080c20007
STA_FRAG 4 Bridge-Frag 0x800080c2000d
STA_BPDU 5 Bridge-BPDU 0x800080c2000e
STA_CRAY 6 Bridge-Cray 0x800000800500
STA_ETH_FCS 15 Bridge-FCS
After this byte follows a part of the packet header.