b97993 dhclient-script: s/addr add/addr replace/

Authored and Committed by jpopelka 4 years ago
    dhclient-script: s/addr add/addr replace/
    
    It might happen that the address is already there,
    in which case we want to update life-times.
    BZ#1187856#c15
    
    ip addr add =     NLM_F_CREATE|NLM_F_EXCL
    ip addr replace = NLM_F_CREATE|NLM_F_REPLACE
    ip addr change =  NLM_F_REPLACE
    
    from linux/netlink.h
    NLM_F_REPLACE   0x100   /* Override existing            */
    NLM_F_EXCL      0x200   /* Do not touch, if it exists   */
    NLM_F_CREATE    0x400   /* Create, if it does not exist */
    
        
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file modified
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