ports/141342: net/mpd5 pppoe connection error

[Volodymyr Kostyrko]

>Number:         141342
>Category:       ports
>Synopsis:       net/mpd5 pppoe connection error
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Dec 10 12:50:00 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Volodymyr Kostyrko
>Release:        RELENG_8_0
>Organization:
>Environment:
FreeBSD chmmr.3501.lan 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Mon Nov 23 13:17:37 EET 2009     arcade at chmmr.3501.lan:/usr/obj/usr/src/sys/MINIMAL_8  amd64
>Description:
Whe n connecting to mpd5 pool with pppoe from windows machine on my configuration first attempt almost certainly fails with:

Dec 10 13:41:53 chmmr mpd: [PKUNK-4] CCP: Decompress using: mppc (MPPE(128 bits))
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: rec'd Configure Request #8 (Ack-Rcvd)
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]   COMPPROTO VJCOMP, 16 comp. channels, allow comp-cid
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]   IPADDR 172.31.0.2
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]     172.31.0.2 is OK
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]   PRIDNS 172.31.0.0
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: SendConfigAck #8
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]   COMPPROTO VJCOMP, 16 comp. channels, allow comp-cid
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]   IPADDR 172.31.0.2
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]   PRIDNS 172.31.0.0
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: state change Ack-Rcvd --> Opened
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: LayerUp
Dec 10 13:41:53 chmmr mpd: [PKUNK-4]   172.31.0.0 -> 172.31.0.2
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IFACE: Adding IPv4 address to ng3 failed: File exists
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IFACE: IfaceChangeAddr() error, closing IPCP
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: parameter negotiation failed
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: state change Opened --> Stopping
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: SendTerminateReq #2
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: LayerDown
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] rec'd unexpected protocol IP
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: rec'd Terminate Ack #2 (Stopping)
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: state change Stopping --> Stopped
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] IPCP: LayerFinish
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] Bundle: No NCPs left. Closing links...
Dec 10 13:41:53 chmmr mpd: [PKUNK-4] Bundle: closing link "re0-5"...

The next attempt however succeeds.

Here is a config sample:

startup:
        set netflow node netflow0
        set netflow hook 256

default:
        #load dialup
        load pppoe_server

pppoe_server:
        create bundle template PKUNK
        set bundle yes compression crypt-reqd
        set ccp yes pred1 deflate mppc
        set mppc yes e128 compress
        set ecp key VitKukItboIpsoawvigs
        set ipcp dns 172.31.0.0
        set ipcp ranges 172.31.0.0/32 172.31.0.0/16
        set iface enable netflow-in netflow-out

        create link template common pppoe
        set auth max-logins 1
        set link action bundle PKUNK
        set link no pap chap eap
        set link yes incoming multilink passive
        set link enable chap
        set pppoe service "3501"

        create link template re0 common
        set link max-children 1000
        set pppoe iface re0
        set link enable incoming
>How-To-Repeat:
Any connection from other machine which should create ng* interface fails first time. Next attempt succeeds.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: