Как передать в скрипт параметры подключения openconnect?

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#
# List of parameters passed through environment
#* reason                       -- why this script was called, one of: pre-init connect disconnect reconnect attempt-reconnect
#* VPNGATEWAY                   -- VPN gateway address (always present)
#* TUNDEV                       -- tunnel device (always present)
#* IDLE_TIMEOUT			-- gateway's idle timeout in seconds (OpenConnect v8.06+); unused
#* INTERNAL_IP4_ADDRESS         -- address (always present)
#* INTERNAL_IP4_MTU             -- MTU (often unset)
#* INTERNAL_IP4_NETMASK         -- netmask (often unset)
#* INTERNAL_IP4_NETMASKLEN      -- netmask length (often unset)
#* INTERNAL_IP4_NETADDR         -- address of network (only present if netmask is set)
#* INTERNAL_IP4_DNS             -- list of DNS servers
#* INTERNAL_IP4_NBNS            -- list of WINS servers
#* INTERNAL_IP6_ADDRESS         -- IPv6 address
#* INTERNAL_IP6_NETMASK         -- IPv6 netmask
#* INTERNAL_IP6_DNS             -- IPv6 list of dns servers
#* CISCO_DEF_DOMAIN             -- default domain name
#* CISCO_BANNER                 -- banner from server
#* CISCO_SPLIT_DNS              -- DNS search domain list
#* CISCO_SPLIT_INC              -- number of networks in split-network-list
#* CISCO_SPLIT_INC_%d_ADDR      -- network address
#* CISCO_SPLIT_INC_%d_MASK      -- subnet mask (for example: 255.255.255.0)
#* CISCO_SPLIT_INC_%d_MASKLEN   -- subnet masklen (for example: 24)
#* CISCO_SPLIT_INC_%d_PROTOCOL  -- protocol (often just 0); unused
#* CISCO_SPLIT_INC_%d_SPORT     -- source port (often just 0); unused
#* CISCO_SPLIT_INC_%d_DPORT     -- destination port (often just 0); unused
#* CISCO_IPV6_SPLIT_INC         -- number of networks in IPv6 split-network-list
#* CISCO_IPV6_SPLIT_INC_%d_ADDR -- IPv6 network address
#* CISCO_IPV6_SPLIT_INC_$%d_MASKLEN -- IPv6 subnet masklen
#
# The split tunnel variables above have *_EXC* counterparts for network
# addresses to be excluded from the VPN tunnel.