dhcpcd-discuss

My firewall runs LEAF Bering-uClibc 6.0.0, which comes with dhcpcd 6.11.5.
Most of the time IPv6 is working, but from time to time I have the
following really strange problem. The PPPoE connection is established (with
+ipv6 in /etc/ppp/options). But whenever I start the dhcpcd, which should
obtain IPv6 adresses through DHCPv6-PD, the connection gets terminated.

From the logs it looks like the ISP terminates the connection (LCP
terminated by peer) because it wasn't able to serve me an IPv6 range
(DHCPv6 REPLY: NOPREFIX-AVAIL).

Does that make sense?

Is that a problem with my ISP?

Or is that a problem on my side? The problem started after I've rebooted
the firewall. Does dhcpcd store a lease file somewhere that, maybe, did not
survive the reboot?

Sven


From /var/log/daemon.log:

Dec 25 02:26:55 kaldra dhcpcd[9062]: ppp0: unsupported interface family 00
Dec 25 02:26:55 kaldra dhcpcd[9062]: forked to background, child pid 9083
Dec 25 02:26:55 kaldra dhcpcd[9083]: DUID
00:01:00:01:1e:92:58:a5:00:0d:b9:40:7f:ec
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.100: IAID b9:40:7f:ee
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.100: IAID conflicts with one
assigned to em2.170
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.170: IAID b9:40:7f:ee
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.170: IAID conflicts with one
assigned to em2.100
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.191: IAID b9:40:7f:ee
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.191: IAID conflicts with one
assigned to em2.100
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.192: IAID b9:40:7f:ee
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.192: IAID conflicts with one
assigned to em2.100
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.193: IAID b9:40:7f:ee
Dec 25 02:26:55 kaldra dhcpcd[9083]: em2.193: IAID conflicts with one
assigned to em2.100
Dec 25 02:26:55 kaldra dhcpcd[9083]: ppp0: IAID 70:70:70:30
Dec 25 02:26:55 kaldra dhcpcd[9083]: ppp0: IAID 00:00:00:01
Dec 25 02:26:55 kaldra dhcpcd[9083]: ppp0: soliciting a DHCPv6 lease
Dec 25 02:26:55 kaldra dhcpcd[9083]: ppp0: soliciting an IPv6 router
Dec 25 02:26:55 kaldra dhcpcd[9083]: ppp0: Router Advertisement from
fe80::20e:d6ff:fea6:ec1b
Dec 25 02:26:55 kaldra dhcpcd[9083]: ppp0: adding address
2a02:200:2f00:91d:dd04:a113:6f76:82f4/64
Dec 25 02:26:56 kaldra dhcpcd[9083]: ppp0: DHCPv6 REPLY: NOPREFIX-AVAIL
Dec 25 02:26:56 kaldra dhcpcd[9083]: ppp0: carrier lost
Dec 25 02:26:56 kaldra dhcpcd[9083]: ppp0: deleting address
2a02:200:2f00:91d:dd04:a113:6f76:82f4/64
Dec 25 02:26:57 kaldra dhcpcd[9083]: ppp0: removing interface


From /var/log/ppp.log:

Dec 25 02:26:56 kaldra pppd[8185]: rcvd [LCP TermReq id=0x2]
Dec 25 02:26:56 kaldra pppd[8185]: LCP terminated by peer
Dec 25 02:26:56 kaldra pppd[8185]: Connect time 1.0 minutes.
Dec 25 02:26:56 kaldra pppd[8185]: Sent 470280 bytes, received 513340 bytes.
Dec 25 02:26:56 kaldra pppd[8185]: Script /etc/ppp/ip-down started (pid
9097)
Dec 25 02:26:56 kaldra pppd[8185]: Script /etc/ppp/ipv6-down started (pid
9100)
Dec 25 02:26:56 kaldra pppd[8185]: sent [LCP TermAck id=0x2]
Dec 25 02:26:56 kaldra pppd[8185]: Script /etc/ppp/ip-down finished (pid
9097), status = 0x1
Dec 25 02:26:56 kaldra pppd[8185]: Script /etc/ppp/ipv6-down finished (pid
9100), status = 0x1
Dec 25 02:26:57 kaldra pppd[8185]: rcvd [LCP TermReq id=0x8f]
Dec 25 02:26:57 kaldra pppd[8185]: sent [LCP TermAck id=0x8f]
Dec 25 02:26:57 kaldra pppd[8185]: Modem hangup
Dec 25 02:26:57 kaldra pppd[8185]: Connection terminated.
Dec 25 02:26:57 kaldra pppd[8185]: Connect time 1.0 minutes.
Dec 25 02:26:57 kaldra pppd[8185]: Sent 470280 bytes, received 513520 bytes.
Dec 25 02:26:57 kaldra pppd[8185]: Failed to disconnect PPPoE socket: 114
Operation already in progress


/etc/dhcpcd.conf:

debug
ipv6only
duid
option rapid_commit
option domain_name_servers
nohook hostname, resolv.conf, mtu, wpa_supplicant, timezone, lookup-hostname
allowinterfaces ppp0 em2.100 em2.170 em2.191 em2.192 em2.193
noipv6rs
background
timeout 0
interface ppp0
    ipv6rs
    ia_pd 1/60 em2.100/4 em2.170/10 em2.191/11 em2.192/12 em2.193/13