Kdump always use _proto=dhcp for both ipv4 and ipv6. But for ipv6 the dhcp address assignment is not like ipv4, there are different ways for it, stateless and stateful, see below document: https://fedoraproject.org/wiki/IPv6Guide
In case stateless, kernel can do the address assignment, dracut use _proto=auto6; for stateful case, dracut use _proto=dhcp6. But it is hard to decide whether stateless or stateful takes effect, hence, dracut introduces ip=either6 option, which can try both of these method automatically for us. For detail, refer to dracut: commit 67354ee 40network: introduce ip=either6 option
We do not see bug reports before because for the most auto6 cases kernel assign ip address before dhclient, kdump just happened to work.
Signed-off-by: Pingfan Liu piliu@redhat.com --- dracut-module-setup.sh | 2 ++ kexec-tools.spec | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index 7505e81..f87617a 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -293,6 +293,8 @@ kdump_setup_netdev() { _static=$(kdump_static_ip $_netdev $_srcaddr) if [ -n "$_static" ]; then _proto=none + elif is_ipv6_address $_srcaddr; then + _proto=either6 else _proto=dhcp fi diff --git a/kexec-tools.spec b/kexec-tools.spec index 5712acb..cc546d2 100644 --- a/kexec-tools.spec +++ b/kexec-tools.spec @@ -50,7 +50,7 @@ Requires(post): systemd-units Requires(preun): systemd-units Requires(postun): systemd-units Requires(pre): coreutils sed zlib -Requires: dracut >= 046-7 +Requires: dracut >= 047-34.git20180604 Requires: dracut-network >= 044-117 Requires: ethtool BuildRequires: zlib-devel zlib zlib-static elfutils-devel-static glib2-devel bzip2-devel ncurses-devel bison flex lzo-devel snappy-devel
On 06/22/18 at 10:41am, Pingfan Liu wrote:
Kdump always use _proto=dhcp for both ipv4 and ipv6. But for ipv6 the dhcp address assignment is not like ipv4, there are different ways for it, stateless and stateful, see below document: https://fedoraproject.org/wiki/IPv6Guide
In case stateless, kernel can do the address assignment, dracut use _proto=auto6; for stateful case, dracut use _proto=dhcp6. But it is hard to decide whether stateless or stateful takes effect, hence, dracut introduces ip=either6 option, which can try both of these method automatically for us. For detail, refer to dracut: commit 67354ee 40network: introduce ip=either6 option
We do not see bug reports before because for the most auto6 cases kernel assign ip address before dhclient, kdump just happened to work.
Signed-off-by: Pingfan Liu piliu@redhat.com
dracut-module-setup.sh | 2 ++ kexec-tools.spec | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index 7505e81..f87617a 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -293,6 +293,8 @@ kdump_setup_netdev() { _static=$(kdump_static_ip $_netdev $_srcaddr) if [ -n "$_static" ]; then _proto=none
- elif is_ipv6_address $_srcaddr; then
_proto=either6diff --git a/kexec-tools.spec b/kexec-tools.spec index 5712acb..cc546d2 100644 --- a/kexec-tools.spec +++ b/kexec-tools.spec @@ -50,7 +50,7 @@ Requires(post): systemd-units Requires(preun): systemd-units Requires(postun): systemd-units Requires(pre): coreutils sed zlib -Requires: dracut >= 046-7 +Requires: dracut >= 047-34.git20180604 Requires: dracut-network >= 044-117 Requires: ethtool BuildRequires: zlib-devel zlib zlib-static elfutils-devel-static glib2-devel bzip2-devel ncurses-devel bison flex lzo-devel snappy-devel -- 2.7.4 _______________________________________________ kexec mailing list -- kexec@lists.fedoraproject.org To unsubscribe send an email to kexec-leave@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kexec@lists.fedoraproject.org/...
Ack
-
Dave Young -
Pingfan Liu