netdev - Re: iproute2 build error due to sr-ipv6 lwtunnel

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Message-ID: <59185B16.5020107@iogearbox.net>
Date:   Sun, 14 May 2017 15:26:46 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     David Lebrun <david.lebrun@...ouvain.be>
CC:     netdev@...r.kernel.org, stephen@...workplumber.org
Subject: Re: iproute2 build error due to sr-ipv6 lwtunnel

On 05/04/2017 11:55 AM, Daniel Borkmann wrote:
> On 05/04/2017 11:28 AM, David Lebrun wrote:
>> On 05/04/2017 11:13 AM, Daniel Borkmann wrote:
>>> Hi David,
>>>
>>> I'm getting the following build error from e8493916a8ed ("iproute:
>>> add support for SR-IPv6 lwtunnel encapsulation"). Reverting your
>>> commit makes iproute2 build again for me. Please take a look.
>>
>> Hi Daniel,
>>
>> This is because linux/seg6.h does an include of linux/in6.h (cf kernel
>> commit ea3ebc73b46fbdb049dafd47543bb22efaa09c8e "uapi: fix linux/seg6.h
>> and linux/seg6_iptunnel.h userspace compilation errors"), and iproute2's
>> include/utils.h requires the system /usr/include/resolv.h, which itself
>> includes /usr/include/netinet/in.h, re-defining struct in6_addr.
>>
>> However, netinet/in.h protects some struct definitions with #ifndef
>> __USE_KERNEL_IPV6_DEFS, which is explicitly defined in
>> iproute_lwtunnel.c, thus avoiding this specific issue.
>>
>> What is your glibc version ?
>
> Ok, I see, on one of my machines I have an old user space, but
> latest net/net-next kernel (+ installed kernel headers) and
> iproute2. glibc version there is 2.18.

David, are you still looking into fixing this?