VPN (IKE)

Initiator SPI: 7138656171386f69
Responder SPI: 7534397576326a39
Next Payload: Notification (N)
Version: 1.0
Exchange Type: Informational
Flags:
    Encryption:     False
    Commit:         False
    Authentication: False
Message ID: 00000000
Length: 40

SIP/2.0 200 OK
Via: SIP/2.0/UDP nm;branch=foo;received=224.26.73.123;rport=26810
From: <sip:nm@nm>;tag=root
To: <sip:nm2@nm2>;tag=as60c87705
Call-ID: 50000
CSeq: 42 OPTIONS
User-Agent: PBX 
Allow: INVITE, ACK, CANCEL, OPTIONS, PRACK, UPDATE, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces,timer,in-band-dtmf,100rel
Contact: <sip:123.160.234.216>
Accept: application/sdp
Content-Length: 0