# \[PATCH net-next 2/2\] net: ipv6: don't generate link local address on PUREIP device - From: Rocco Yue \ - Date: 2021-01-28 06:11:39 - List: netdev - Page: https://ratatoskr.run/netdev/2021/01/6250485 - Thread: https://ratatoskr.run/netdev/2021/01/6250485/t.md ```text PUREIP device such as ccmni does not need kernel to generate link-local address in any addr_gen_mode, generally, it shall use the IPv6 Interface Identifier, as provided by the GGSN, to create its IPv6 link-ocal Unicast Address. Signed-off-by: Rocco Yue --- net/ipv6/addrconf.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 9edc5bb2d531..5e8134d3e704 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3337,7 +3337,8 @@ static void addrconf_dev_config(struct net_device *dev) (dev->type != ARPHRD_IPGRE) && (dev->type != ARPHRD_TUNNEL) && (dev->type != ARPHRD_NONE) && - (dev->type != ARPHRD_RAWIP)) { + (dev->type != ARPHRD_RAWIP) && + (dev->type != ARPHRD_PUREIP)) { /* Alas, we support only Ethernet autoconfiguration. */ idev = __in6_dev_get(dev); if (!IS_ERR_OR_NULL(idev) && dev->flags & IFF_UP && @@ -3350,6 +3351,12 @@ static void addrconf_dev_config(struct net_device *dev) if (IS_ERR(idev)) return; + /* this device type doesn't need to generate + * link-local address in any addr_gen_mode + */ + if (dev->type == ARPHRD_PUREIP) + return; + /* this device type has no EUI support */ if (dev->type == ARPHRD_NONE && idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_EUI64) -- 2.18.0 ```