inet6.py 文件源码

def neighsol(addr, src, iface, timeout=1, chainCC=0):
    """
    Sends an ICMPv6 Neighbor Solicitation message to get the MAC address
    of the neighbor with specified IPv6 address addr. 'src' address is 
    used as source of the message. Message is sent on iface. By default,
    timeout waiting for an answer is 1 second.

    If no answer is gathered, None is returned. Else, the answer is 
    returned (ethernet frame).
    """

    nsma = in6_getnsma(inet_pton(socket.AF_INET6, addr))
    d = inet_ntop(socket.AF_INET6, nsma)
    dm = in6_getnsmac(nsma)
    p = Ether(dst=dm)/IPv6(dst=d, src=src, hlim=255)
    p /= ICMPv6ND_NS(tgt=addr)
    p /= ICMPv6NDOptSrcLLAddr(lladdr=get_if_hwaddr(iface))
    res = srp1(p,type=ETH_P_IPV6, iface=iface, timeout=1, verbose=0, 
               chainCC=chainCC)    

    return res