Lines 67-128 show the negotiation of Internet Protocol Control Protocol (IPCP) parameters.
67 Link link_0 : Phase was AUTHENTICATE, Phase Now NETWORK 68 Link link_0 : Entering NETWORK phase, notify kernel 69 Bundle Annex: Phase was DEAD, Phase Now NETWORK 70 Bundle Annex: Entering NETWORK phase, notify kernel 71 Bundle Annex: Start Protocol IPCP 72 Bundle Annex: IPCP FSM Event Administrative Open 73 Bundle Annex: IPCP Causes State INITIAL -> STARTING 74 Bundle Annex: IPCP Starting 75 Bundle Annex: IPCP FSM Event Up 76 Bundle Annex: IPCP Causes State STARTING -> REQSENT 77 Bundle Annex: IPCP Constructing Configure Request 78 Bundle Annex: IPCP Request Local Address 156.120.24.66 79 Bundle Annex: IPCP Request DNS Address 0.0.0.0 80 Bundle Annex: IPCP Request Secondary DNS Address 0.0.0.0 81 Bundle Annex: IPCP Send Configure Request 82 Bundle Annex: Got Statistics update 83 Bundle Annex: AUDIT outgoing Annex. Connected date 84 Link link_0 : LCP Received Code Reject 85 Link link_0 : LCP Code Reject is of Identification 86 Link link_0 : LCP FSM Event Receive Protocol/Code Reject (Acceptable) 87 Link link_0 : LCP Causes State OPENED -> OPENED 88 Bundle Annex: IPCP Received Configure Reject 89 Bundle Annex: IPCP FSM Event Receive Configure Nak/Reject 90 Bundle Annex: IPCP Causes State REQSENT -> REQSENT 91 Bundle Annex: IPCP Constructing Configure Request (after Reject) 92 Bundle Annex: IPCP Request Local Address 156.120.24.66 93 Bundle Annex: IPCP DNS Option was rejected 94 Bundle Annex: IPCP Secondary DNS Option was rejected 95 Bundle Annex: IPCP Send Configure Request 96 Bundle Annex: IPCP Received Configure Nak 97 Bundle Annex: IPCP FSM Event Receive Configure Nak/Reject 98 Bundle Annex: IPCP Causes State REQSENT -> REQSENT 99 Bundle Annex: IPCP Constructing Configure Request (after Nak) 100 Bundle Annex: IPCP Local Address (Any) was Nak'ed with 156.120.135.2 - Allowing 101 Bundle Annex: IPCP Send Configure Request 102 Bundle Annex: IPCP Received Configure Ack 103 Bundle Annex: IPCP FSM Event Receive Configure Ack 104 Bundle Annex: IPCP Causes State REQSENT -> ACKRCVD 105 Bundle Annex: IPCP Received Configure Request 106 Bundle Annex: IPCP Peer requests VJ Header Compression (Ack) 107 Bundle Annex: IPCP Peer requests Slot Compression (Ack) 108 Bundle Annex: IPCP Peer requests Max-Slot 16 (Ack) 109 Bundle Annex: IPCP Peer requests IP Address 156.120.1.57 (Ack) 110 Bundle Annex: IPCP Default DNS Advertisement (None) 111 Bundle Annex: IPCP Default DNS Advertisement (None) 112 Bundle Annex: IPCP Configure Request is acceptable (Ack) 113 Bundle Annex: IPCP FSM Event Receive Configure Request (Acceptable) 114 Bundle Annex: IPCP Causes State ACKRCVD -> OPENED 115 Bundle Annex: IPCP Send Configure Ack 116 Bundle Annex: IPCP Up 117 Bundle Annex: IPCP Local address 156.120.135.2 118 Bundle Annex: IPCP Peer address 156.120.1.57 119 Bundle Annex: IPCP Local VJ Compression Disabled 120 Bundle Annex: IPCP Peer VJ Compression Enabled 121 Bundle Annex: IPCP Max-Slot-Id 16, Slot Compression 122 Bundle Annex: IPCP Primary DNS Address (Not obtained) 123 Bundle Annex: IPCP Secondary DNS Address (Not obtained) 124 Bundle Annex: IPCP Configuring interface ppp0 125 Bundle Annex: IPCP Binding to network protocol 0x0021 126 Bundle Annex: IPCP Binding to network protocol 0x002d 127 Bundle Annex: IPCP Binding to network protocol 0x002f 128 Bundle Annex: IPCP Notify kernel protocol OPENEDOn lines 77-97, IPCP negotiation could not establish the addresses of any advertized DNS servers, and LCP identification of the PPP version was rejected because the remote side's version of PPP did not recognize these requests.
On line 100, the remote side refused the request by the local end of the link for the IP address 156.120.24.66 and overrode it with the address 156.120.135.2.
Line 119 shows that the local host disabled VJ header compression whereas lines 120-122 shows that the remote host enabled it at its end. Enabling VJ header and slot compression at the local end would improve the performance of data transfer over the link. (Note that VJ header and slot compression should not be enabled for links over ISDN lines.)
Line 128 shows that the kernel has been notified that the PPP link has been established. The network interface corresponding to the link should now be visible using the ifconfig -a command.