My firewall runs LEAF Bering-uClibc 6.0.0, which comes with pppd 2.4.7 and 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, maybe some state file 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 -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html