Bug 460371
| Summary: | default /etc/sysconfig/ip6tables does not permit router advertisements | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | La Monte H.P. Yarroll7 <piggy-fedora> |
| Component: | iptables | Assignee: | Thomas Woerner <twoerner> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | low | Docs Contact: | |
| Priority: | medium | ||
| Version: | 9 | CC: | piggy-fedora |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-09-08 14:56:46 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Could it be that you are wither using a FC-6 system or an FC-6 iptables package in a F-9 system? The default ipv6 firewall for F-9 contains the rule "-A INPUT -p ipv6-icmp -j ACCEPT", which permits all icmp messages. The problem was actually detected in CentOS 5.1. I thought I had traced the provinance of the package properly, but apparently not. Thanks for confirming that this is now fixed. |
Description of problem: Autoconfig of IPv6 addresses does not work because router advertisements are blocked. Version-Release number of selected component (if applicable): iptables v1.3.5 r1.2.1.100899 How reproducible: Fully reproducible Steps to Reproduce: 1. Arrange for a router to produce router advertisements (I used radvd on another Linux box). 2. In /etc/sysconfig/network set: NETWORKING_IPV6=yes 3. In /etc/sysconfig/network-scripts/ifcfg-eth0 set IPV6_AUTOCONF="yes" IPV6INIT=yes 4. ifdown eth0;ifup eth0 Observe that no IPv6 global address is assigned to eth0. Actual results: [root@ss-111 ~]# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:02:0E:FA:10:08 inet addr:10.0.240.111 Bcast:10.0.240.255 Mask:255.255.255.0 inet6 addr: fe80::202:eff:fefa:1008/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7239 errors:2 dropped:0 overruns:0 frame:2 TX packets:5838 errors:2 dropped:0 overruns:0 carrier:2 collisions:94 txqueuelen:1000 RX bytes:523238 (510.9 KiB) TX bytes:621648 (607.0 KiB) Expected results: [root@ss-111 ~]# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:02:0E:FA:10:08 inet addr:10.0.240.111 Bcast:10.0.240.255 Mask:255.255.255.0 inet6 addr: fc00::202:eff:fefa:1008/64 Scope:Global inet6 addr: fe80::202:eff:fefa:1008/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7239 errors:2 dropped:0 overruns:0 frame:2 TX packets:5838 errors:2 dropped:0 overruns:0 carrier:2 collisions:94 txqueuelen:1000 RX bytes:523238 (510.9 KiB) TX bytes:621648 (607.0 KiB) Additional info: The fix is to add the following line to /etc/sysconfig/ip6tables: [0:0] -A INPUT -p icmpv6 -m icmpv6 --icmpv6-type 134 -j ACCEPT