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dracut-module-setup.sh: pass ip=either6 param for ipv6

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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>
This commit is contained in:
Pingfan Liu 2018-06-22 10:41:10 +08:00 committed by Dave Young
parent 92db9cb9f2
commit 6832be14f2
2 changed files with 3 additions and 1 deletions
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2
dracut-module-setup.sh
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@ -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

2
kexec-tools.spec
View File

@ -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