Diff bird-1.6.3-r1 with a bird-1.6.4

/usr/portage/net-misc/bird/bird-1.6.4.ebuild 2018-06-08 16:09:00.000000000 +0300
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	sys-devel/m4"
20 20

  
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src_prepare() {
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	eapply_user
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	mkdir ipv6
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	tar c --exclude ipv6 . | tar x -C ipv6
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	eapply_user
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}
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src_configure() {
Thank you!