linux-kernel - Weird Kconfig condition (IPV6 [=n] || IPV6 [=n]=n)

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Message-ID: <55F68854.70508@free.fr>
Date:	Mon, 14 Sep 2015 10:41:56 +0200
From:	Mason <slash.tmp@...e.fr>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: Weird Kconfig condition (IPV6 [=n] || IPV6 [=n]=n)

Hello,

I did make menuconfig in v4.2

In the help for CONFIG_CRYPTO_HMAC, I have

  │   Selected by: IP_SCTP [=n] && NET [=y] && INET [=y] && (IPV6 [=n] || IPV6 [=n]=n) || INET_AH [=n] && NET [=y] && INET [=y] || \              │  
  │ INET_ESP [=n] && NET [=y] && INET [=y] || INET6_AH [=n] && NET [=y] && INET [=y] && IPV6 [=n] || INET6_ESP [=n] && NET [=y] && INET [=y]\     │  
  │  && IPV6 [=n] || SCTP_COOKIE_HMAC_MD5 [=n] && NET [=y] && IP_SCTP [=n] && SCTP_COOKIE_HMAC_MD5 [=n] || SCTP_COOKIE_HMAC_SHA1 [=n] && \        │  
  │ NET [=y] && IP_SCTP [=n] && SCTP_COOKIE_HMAC_SHA1 [=n] || CIFS [=n] && NETWORK_FILESYSTEMS [=y] && INET [=y] || TRUSTED_KEYS [=n] && \        │  
  │ KEYS [=y] && TCG_TPM [=n] || ENCRYPTED_KEYS [=n] && KEYS [=y] || IMA [=n] && INTEGRITY [=n] || EVM [=n] && INTEGRITY [=n] || \                │  
  │ CRYPTO_DRBG_HMAC [=y] && CRYPTO [=y] && CRYPTO_DRBG_MENU [=m] || CRYPTO_DEV_OMAP_SHAM [=n] && CRYPTO [=y] && CRYPTO_HW [=y] && \              │  
  │ ARCH_OMAP2PLUS [=n] || CRYPTO_DEV_QAT [=n] && CRYPTO [=y] && CRYPTO_HW [=y]                                                                   │  


What does (IPV6 [=n] || IPV6 [=n]=n) mean?
Is this a bug in my configuration?

Regards.
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