From d715b725fa04005342ee18de60bb63e201e83254 Mon Sep 17 00:00:00 2001
From: dithwick <46924962+dithwick@users.noreply.github.com>
Date: Fri, 28 Mar 2025 08:26:56 +0000
Subject: [PATCH] openmpi: add ipv6 variant (#49727)

---
 var/spack/repos/builtin/packages/openmpi/package.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/var/spack/repos/builtin/packages/openmpi/package.py b/var/spack/repos/builtin/packages/openmpi/package.py
index b904fab56cb..fffedab906b 100644
--- a/var/spack/repos/builtin/packages/openmpi/package.py
+++ b/var/spack/repos/builtin/packages/openmpi/package.py
@@ -558,6 +558,7 @@ class Openmpi(AutotoolsPackage, CudaPackage):
         when="@1.3:4",
         description="Prefix Open MPI to PATH and LD_LIBRARY_PATH on local and remote hosts",
     )
+    variant("ipv6", default=False, when="@4:", description="Enable IPv6 support")
     # Adding support to build a debug version of OpenMPI that activates
     # Memchecker, as described here:
     #
@@ -1065,6 +1066,10 @@ def configure_args(self):
         if spec.satisfies("+orterunprefix"):
             config_args.append("--enable-orterun-prefix-by-default")
 
+        # Enable IPv6 support
+        if spec.satisfies("+ipv6"):
+            config_args.append("--enable-ipv6")
+
         # some scientific packages ignore deprecated/remove symbols. Re-enable
         # them for now, for discussion see
         # https://github.com/open-mpi/ompi/issues/6114#issuecomment-446279495